ARM: SoC fixes for v5.11

There are only two remaining non-urgent ARM SoC bug fixes that
could still apply for v5.11, or for the v5.12 merge window:

- A build fix for the Atmel SAM9 platform to allow building
  with the clang integrated assembler

- A DT fix for ethernet on Intel SoCFPGA, this has been broken
  since it was added in v5.4.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>